In message , Mike Harrison
writes
On Sun, 6 Sep 2009 01:06:29 -0700 (PDT), Matty F
wrote:

I'd like to put up another fake camera. Does anyone have bright ideas
on something amusing to put on the camera to give them a big fright
when they try to pinch it? A loud alarm perhaps. Some compound that
gets on their hands and can't be washed off for weeks? etc etc?

Filll with indelible skin-dying ink which spills out of holes in the
side when it's moved.

A bottle of black Quink? Cheap and cheerful.
--
Graeme